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age related cognitive decline

Jayita De, Anne P F Wand, Peter I Smerdely, Glenn E Hunt
OBJECTIVE: To measure the diagnostic accuracy of the 4A's test in screening for delirium in geriatric inpatients from culturally diverse backgrounds. METHODS: A prospective study was conducted with patients admitted to the geriatric and orthogeriatric services of a tertiary teaching hospital. Consenting participants aged 65 years and over were screened for delirium with the 4AT by nursing staff within 72 h of admission. The diagnosis of delirium was made separately by expert assessors, responsible for the participant's clinical care, blinded to the 4AT score, within 30 min of the 4AT assessment using the DSM 5 criteria and the Confusion Assessment Method...
October 20, 2016: International Journal of Geriatric Psychiatry
IbDanelo Cortez, Dmitry V Bulavin, Ping Wu, Erica L McGrath, Kathryn A Cunningham, Maki Wakamiya, John Papaconstantinou, Kelly T Dineley
A major aspect of mammalian aging is the decline in functional competence of many self-renewing cell types, including adult-born neuronal precursors. Since age-related senescence of self-renewal occurs simultaneously with chronic up-regulation of the p38MAPKalpha (p38α) signaling pathway, we used the dominant negative mouse model for attenuated p38α activity (DN-p38α(AF/+)) in which Thr180 and Tyr182 are mutated (T→A/Y→F) to prevent phosphorylation activation (DN-p38α(AF/+)) and kinase activity. As a result, aged DN-p38α(AF/+) mice are resistant to age-dependent decline in proliferation and regeneration of several peripheral tissue progenitors when compared to wild-type littermates...
October 17, 2016: Behavioural Brain Research
Xiaoniu Liang, Ding Ding, Qianhua Zhao, Qihao Guo, Jianfeng Luo, Zhen Hong
BACKGROUND: The smell sense reduction was considered to represent the potentially warning of early stage of neurodegenerative disorders. The Shanghai Aging Study provided us a unique opportunity to explore the association between olfactory identification (OI) and cognitive function among community-dwelling elderly in China. METHODS: OI of each participant was measured by the 12-item identification tests from Sniffin' Sticks Screening test (SSST-12). Participants with mild cognitive impairment (MCI) were diagnosed by Petersen criteria...
October 20, 2016: BMC Neurology
Xue-Yuan Li, Wei-Wei Men, Hua Zhu, Jian-Feng Lei, Fu-Xing Zuo, Zhan-Jing Wang, Zhao-Hui Zhu, Xin-Jie Bao, Ren-Zhi Wang
Alzheimer's disease (AD) is a leading cause of dementia worldwide, associated with cognitive deficits and brain glucose metabolic alteration. However, the associations of glucose metabolic changes with cognitive dysfunction are less detailed. Here, we examined the brains of APP/presenilin 1 (PS1) transgenic (Tg) mice aged 2, 3.5, 5 and 8 months using (18)F-labed fluorodeoxyglucose ((18)F-FDG) microPET to assess age- and brain region-specific changes of glucose metabolism. FDG uptake was calculated as a relative standardized uptake value (SUVr)...
October 18, 2016: International Journal of Molecular Sciences
Cecilia U D Stenfors, Linda M Hanson, Töres Theorell, Walter S Osika
Objective: Executive cognitive functioning is essential in private and working life and is sensitive to stress and aging. Cardiovascular (CV) health factors are related to cognitive decline and dementia, but there is relatively few studies of the role of CV autonomic regulation, a key component in stress responses and risk factor for cardiovascular disease (CVD), and executive processes. An emerging pattern of results from previous studies suggest that different executive processes may be differentially associated with CV autonomic regulation...
2016: Frontiers in Psychology
Ingmar Skoog, Helena Hörder, Kerstin Frändin, Lena Johansson, Svante Östling, Kaj Blennow, Henrik Zetterberg, Anna Zettergren
The association between decline in physical function and age-related conditions, such as reduced cognitive performance and vascular disease, may be explained by genetic influence on shared biological pathways of importance for aging. The apolipoprotein E (APOE) gene is well-known for its association with Alzheimer's disease, but has also been related to other disorders of importance for aging. The aim of this study was to investigate possible associations between APOE allele status and physical function in a population-based longitudinal study of older individuals...
2016: Frontiers in Aging Neuroscience
Laura K Holden, Jill B Firszt, Ruth M Reeder, Rosalie M Uchanski, Noël Y Dwyer, Timothy A Holden
OBJECTIVE: To identify primary biographic and audiologic factors contributing to cochlear implant (CI) performance variability in quiet and noise by controlling electrode array type and electrode position within the cochlea. BACKGROUND: Although CI outcomes have improved over time, considerable outcome variability still exists. Biographic, audiologic, and device-related factors have been shown to influence performance. Examining CI recipients with consistent array type and electrode position may allow focused investigation into outcome variability resulting from biographic and audiologic factors...
October 12, 2016: Otology & Neurotology
Kathryn V Blake
PURPOSE OF REVIEW: Poor adherence to asthma controller medications, particularly inhaled corticosteroids, has been well known for decades and is a major cause of uncontrolled asthma and increased healthcare utilization. This review presents recent evidence on factors leading to nonadherence in specific age groups, parents of young children, adolescents and young adults, adults, and the elderly. Novel management strategies including electronic sensors with associated smart phone applications for adherence improvement are discussed...
October 15, 2016: Current Opinion in Pulmonary Medicine
Ari L Mendell, Carolyn E Creighton, Bettina E Kalisch, Neil J MacLusky
Low free testosterone levels in men are associated with age-related cognitive decline and increased risk for neurotoxicity, resulting in disease. The mechanisms underlying these observations remain poorly defined. While rapid, androgen receptor-dependent activation of extracellular signal-regulated kinase (ERK) has been postulated as a neurotrophic and neuroprotective mechanism, actions of testosterone metabolites such as 5α-androstane-3α,17β-diol (3α-diol) may also be involved. We investigated the influence of 3α-diol on the induction of ERK phosphorylation in SH-SY5Y human female neuroblastoma cells and primary cortical neurons from male and female mice...
October 18, 2016: Endocrinology
Bo Carlberg
The J curve hypothesis propose that the relation between blood pressure and risk for cardiovascular events is non-linear. Instead of a decreased risk with lower blood pressure, the risk increases at lower blood pressures. This issue has been discussed for many years, and is still a hot topic. The debates have most often had its origin in the question about how far blood pressure should be lowered with antihypertensive drugs.One one hand, we know that many patients with hypertension is not treated to targets according to guidelines and that this contributes to the high risk for cardiovascular diseases in patients with hypertension...
September 2016: Journal of Hypertension
Yuda Turana
Observational studies have conveyed the connection between hypertension and cognitive impairment. Several forms of dementia are more frequent in hypertensive subjects or those with previous history of hypertension compared to subjects with normal blood pressure.In many studies, hypertension occuring in mid-life is a risk factor of dementia occuring in later age. Long-standing hypertension will induce structural damages in the brain. It is also widely known that hypertension attributes to small vessel diseases causing lacunar infarcts and white matter lesions associated with cognitive decline...
September 2016: Journal of Hypertension
Leroy L Cooper, Gary F Mitchell
BACKGROUND: Aortic stiffness is associated with cardiovascular and cerebrovascular events and cognitive decline. This mini-review focuses on relations of aortic stiffness with microvascular dysfunction and discusses the contribution of abnormal pulsatile hemodynamics to cerebrovascular damage and cognitive decline. We also provide a rationale for considering aortic stiffness as a putative and important contributor to memory impairment in older individuals. SUMMARY: Aging is associated with stiffening of the aorta but not the muscular arteries, which reduces wave reflection and increases the transmission of pulsatility into the periphery...
September 2016: Pulse (Basel, Switzerland)
Abigail Livny, Anat Biegon, Tammar Kushnir, Sagi Harnof, Chen Hoffmann, Eyal Fruchter, Mark Weiser
Traumatic brain injury (TBI) is known to have a substantial, though highly variable, impact on cognitive abilities. Due to the wide range of cognitive abilities among healthy individuals, an objective assessment of TBI-related cognitive loss requires an accurate measurement of premorbid cognitive performance. To address this problem, we recruited 50 adults who sustained a TBI and had performed a cognitive baseline assessment in adolescence as part of the aptitude tests mandated by the Israeli Defense Forces...
October 18, 2016: Journal of Neurotrauma
Pierre Bordaberry, Christian Gerlach, Quentin Lenoble
: Background/Study Context: The objective of this study was to investigate the object recognition deficit in aging. Age-related declines were examined from the presemantic account of category effects (PACE) theory perspective (Gerlach, 2009, Cognition, 111, 281-301). This view assumes that the structural similarity/dissimilarity inherent in living and nonliving objects, respectively, can account for a wide range of category-specific effects. METHODS: In two experiments on object recognition, young (36 participants, 18-27 years) and older (36 participants, 53-69 years) adult participants' performances were compared...
October 2016: Experimental Aging Research
Taiji Ogawa, Masahiro Uota, Kazunori Ikebe, Yasumichi Arai, Kei Kamide, Yasuyuki Gondo, Yukie Masui, Tatsuro Ishizaki, Chisato Inomata, Hajime Takeshita, Yusuke Mihara, Kodai Hatta, Yoshinobu Maeda
The sense of taste plays a pivotal role for personal assessment of the nutritional value, safety, and quality of foods. Although it is commonly recognized that taste sensitivity decreases with age, alterations in that sensitivity over time in an old-old population have not been previously reported. Furthermore, no known studies utilized comprehensive variables regarding taste changes and related factors for assessments. Here, we report novel findings from a 3-year longitudinal study model aimed to elucidate taste sensitivity decline and its related factors in old-old individuals...
October 17, 2016: Journal of Oral Rehabilitation
Marie-Hélène Pilon, Stéphane Poulin, Marie-Pierre Fortin, Michèle Houde, Louis Verret, Rémi W Bouchard, Robert Laforce
Few studies have explored the rate of cognitive decline and caregiver burden within the context of a specialized memory clinic. When this was done, the focus was largely on functional decline related to Alzheimer's disease (AD). Our goal was to compare the longitudinal decline of AD patients to those with Vascular Dementia (VaD) on Mini-Mental State Examination (MMSE). We further explored the differential impact on caregiver burden. We retrospectively studied 237 charts from patients seen at our Memory Clinic between 2006 and 2012...
March 11, 2016: Neurology (ECronicon)
Carola Stockburger, Davide Miano, Thea Pallas, Kristina Friedland, Walter E Müller
The mitochondrial cascade hypothesis of dementia assumes mitochondrial dysfunction leading to reduced energy supply, impaired neuroplasticity, and finally cell death as one major pathomechanism underlying the continuum from brain aging over mild cognitive impairment to initial and advanced late onset Alzheimer's disease. Accordingly, improving mitochondrial function has become an important strategy to treat the early stages of this continuum. The metabolic enhancer piracetam has been proposed as possible prototype for those compounds by increasing impaired mitochondrial function and related aspects like mechanisms of neuroplasticity...
2016: Neural Plasticity
Qu Tian, Yang An, Susan M Resnick, Stephanie Studenski
BACKGROUND: most older individuals who experience mobility decline, also show cognitive decline, but whether cognitive decline precedes or follows mobility limitation is not well understood. OBJECTIVE: examine the temporal sequence of mobility and cognition among initially unimpaired older adults. METHODS: mobility and cognition were assessed every 2 years for 6 years in 412 participants aged ≥60 with initially unimpaired cognition and gait speed...
October 15, 2016: Age and Ageing
Ilse Bloom, Mark Edwards, Karen A Jameson, Holly E Syddall, Elaine Dennison, Catharine R Gale, Janis Baird, Cyrus Cooper, Avan Aihie Sayer, Sian Robinson
BACKGROUND: poor diet quality is common among older people, but little is known about influences on food choice, including the role of psychosocial factors at this age. OBJECTIVE: to identify psychosocial correlates of diet quality in a community-dwelling population of men and women aged 59-73 years; to describe relationships with change in diet quality over 10 years. DESIGN: Longitudinal cohort, Hertfordshire Cohort Study (HCS). SUBJECTS: HCS participants assessed at baseline (1998-2003: 1,048 men, 862 women); 183 men and 189 women re-assessed in 2011...
October 15, 2016: Age and Ageing
Marivi Nabong Moen, Roar Fjær, El Hassan Hamdani, Jon K Laerdahl, Robin Johansen Menchini, Magnus Dehli Vigeland, Ying Sheng, Dag Erik Undlien, Bjørnar Hassel, Mustafa A Salih, Heba Y El Khashab, Kaja Kristine Selmer, Farrukh Abbas Chaudhry
Progressive myoclonus epilepsy is a heterogeneous group of disorders characterized by myoclonic and tonic-clonic seizures, ataxia and cognitive decline. We here present two affected brothers. At 9 months of age the elder brother developed ataxia and myoclonic jerks. In his second year he lost the ability to walk and talk, and he developed drug-resistant progressive myoclonus epilepsy. The cerebrospinal fluid level of glutamate was decreased while glutamine was increased. His younger brother manifested similar symptoms from 6 months of age...
October 14, 2016: Brain: a Journal of Neurology
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